8.4 Energetic Gaseous Water

Evaporation

Evaporation is when a material moves from a liquid to gaseous phase. Evaporation is a cooling process. Duration: 5:27.

Boiling

If water molecules have enough thermal energy, they can escape the liquid phase beneath the surface of the liquid. This is called boiling. Duration: 12:32.

Energy and Phase Transformations

It takes energy to go from a solid to a liquid or a liquid to a gas. Conversely, energy is released when a material goes from a gas to a liquid or from a liquid to a solid. Duration: 5:21.

Going Between Liquid and Gas

It takes a lot of energy to change 100 degree liquid water to 100 degree gaseous water. This amount of energy is given by the heat of vaporization. Duration: 6:28.